package filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

//拦截未登录状态下”我的订单“
public class MyorderFilter implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;
        HttpSession session = request.getSession();
        if(request.getSession().getAttribute("shopCar")==null){
            response.getWriter().println("请先登录！！！（2秒后自动跳转）");
            response.setHeader("refresh", "2;URL=login.jsp");
        }else {
            chain.doFilter(request, response);
        }
    }

    public void init(FilterConfig config) throws ServletException {

    }

}
